A 35-year-old man who moved into the Portland home of an 86-year-old woman and her husband two years ago is accused of stealing $16,950 from her by writing checks to himself from the woman's bank account.

Bank documents show that Kaufman wrote 18 checks from the 86-year-old woman's account to himself, between April 2014 and June 17, 2014.

The amounts ranged from $400 a check to $2,500, according to a probable cause affidavit filed in court Wednesday.

On July 29, Kaufman also tried to make a withdrawal from the woman's bank account at a downtown Portland bank, but a bank employee discovered among the papers he presented a revocation of his power of attorney for the woman. Police were called and Kaufman was arrested.

The woman's daughter also had noticed the suspicious bank withdrawals and alerted authorities.

Kaufman was booked Tuesday afternoon into the Multnomah County Detention Center and released on his own recognizance. He's due back in court Aug. 13.